Method of and machine for making wire-glass.



PATENTED DEC. 25, 1906.

N. FRANZBN. METHOD OF AND MACHINE FOR MAKING W I E GLASS.

APPLICATION FILED JUNE 4,1906.

2 SHEBTS-SHBET l.

INVENTOR PATENTED DEC. 25, 1906,

METHOD OF AND MACHINE FOR MAKING WIRE GLASS.

APPLIOATIOI LILED JUNE 4,1906.

2 SHEETS-SHEET 2.

b M a ,5 r m. in in-Fr. m .53. All gills it i l itiqist s gecificationof Letters ?atent.

Patented Dec. 25. 1906 To t?! minim- 2/ mag ('HIZHVI'I'L.

it known that i, Xioiiins l imxziix, a

f i l-.0 l lilllil Sta-L s. residing at Eloin the. count of ashing onVania, have invented or a certain new and useful l.l'lli )l'()\'0- iods0i and Ixlachines for Makof which improvements the "location. U en-Joslates io improvements in methods of and maul 'nes for making wireglass;and. object of in}; improvements the production of wirmglass of superiorquality.

One method of .l'orxning .i'ire-glass consists lin lependem layers ofupon sunala sui ees and then uniting such independently neznl la \'ersinto an integral sheet. in

10 cases the component wire nporaied in one of ihe la \ers head. inother cases it is 'q'ers as they are brou' ut uniting. It dillieultjvwhich is o 1, {ital application of tnoi outlined aoiyi'e lies in thefaet that the surf of the. to iponent layers a re hardened or cl fled toan appreciable degree in the sprenning operation and that theirsubs-aquiait union consequently more or less imperfect or incomplete.

'PHLQR'C concerns this is in providing be- "l the former which lass nlayer form (and of the art is a um of substance Ltd, ther for enccuezreii the sulated will have a suri'ace less chilled or 'nardene: tionto weld or unite with. its fellon. 'lhis insulating blanket or stratumwii l\ which l. envelop the i'or ier is pi'el'er bl steam, and method ispreferably carried into effect in tho manner-presenlly to be described.

The inerhanism by which l. preferably EH3 iinprovenieiu, in method outissh wn ding;ammatically in and acc rdingly in better ronditheaeeon'ipanying drawings, which form part of this speeiliealion.

Figure 1 shows tho essential features of the machine in verticallongitudinal section. Fig. 2 is a lik fiOW showingcertain parts inalternative form. 3 is a like View of a detailed part of Fig. 1 shown inalternative form, and Fig. 4- shows also in longitudinal verticalsection a machine of somewhat differi'ent construction which embodies mypresout invention in its broader aspect.

Referring to Figs. 1 and 2, a pair of rolls 1* and 2 are so spared andarranged in respect to one another that when positively rotated inopposite directions, as indicated by the arrows (zand 1), they unitsinto an integral sheet A two layers of glass B and C, previously spreadupon their surfaces in the manner heroinafi'm explained. Means areprovided for spreaning molten glass to layer form upon the surfaeis ofrolls 1 and 2 adjacent to and upon the intake side of the pass betweenthem. Such means consists, preferably. of rolls and o, suitably spacedand arranged rela'itively to rolls 1 and 2, as indicated in the draw' s,and as will readily be understood. These rolls cooperate with rolls 1and 2 to form hoppenlike receptacles, in which molten glass may beteemed and sustained by grai'it while the spreading process progresses.These rolls 5 and 6 may be waterwr oled, if desired, as indicated in lig. of the drawin s.

The means for pvt-alluring the steamblanket whic shall envelop rolls 5and 6 and insulate a; i t heat conduction during the layer-spreadingoperation are shown in al ternative Form in the several figures. Theyconsist. essential 3'. of a water-supply to wet the surfaces of therolls, and as these wet rolls tur'; and eome into contact with themolten glass the water is vaporized, and the Vapor is retained upon orclings to the rollssurfaees sullivientl) to ell'ect the insulation whichi have deseribt'l. In Fig. 1 this moisiening means consis s of a pair ofboxes 8). and rolls 5) and (5 form part oi the walls of these boxes.These boxes are designed to contain water, and to that end the contactof the rolls with the adjacent portions of the w alls of the boxes ismadc tight in any welllqnownsmnnner. 'lheserolls 5 and 6 turning ICO orboth of the rolls.

or cavities or culs-de-sac in the roll-surface must be guarded against.

l, as shown in Fig. 4.

liflgH-Oll 5 cooperates, as in the other case, to-

to layer form, andbeen impossible to r faces Similar'construction isillustrated in It will be understood that other sub stances of suitableproperties may be used in place of water to effect the describedinsulatiorr against .heat conduction.

I have described rolls and 6 of Fig. 1 as Water-cooled, for undueheating of the rolls In Fig. 3 I have shown further means of guardingagainst such: heating in: employing two rolls 5 and two rolls 6, closin.the opposite ends of boxes 9*, and the whoIe nions 10. If such astructure be employed, when the rolls at one end of the boxes becomeunduv heated the whole may be swung on its trunnions to bring the rollsat the: other end of the boxes into service. In this alternativestructure also the rolls may be water-cooled, if'desired, as thedrawings indicate.

The forming-surface, which in Figs. 1' and 2 appears as a roll 1, may bea casting-table I With it the spreadspread the molten glass upon it thetwo layers of .lass B and C are united upon fabric D by rdll- 2. In thiscase I have shown roll 5 alone provided with heatinsulating. means, andthe particular means to this end (shown in Fig. 4) is the same asthe-means shown in Fig. 2. An additional roll 19, positively driven: inthe direction ind icatedby arrow 0', may be employed, if desired,zto-enlarge the hopper for molten glass to be spread between rolls 2 aud o.

Though heretofore roposed, it has in fact llmolten glass to sheet formbetween a pair of rolls with such success as to render the practicable.It has heretoforebeen found necessary to-begin rolling when the teemingof the hot lass begins; otherwise the batch of glass ehifis or coolsagainst the roll-bodies tosuch an extent that frequently the rolls whenset in motion slip upon the batch; of

' glass, and, on the other hand, if rolling com mences when the pouringcommences there is reat waste. I have made this pro-jectof rollingbetween a pair of rolls commercially possible by making rough thesurface of one I preferably form pits in the manner set forth in myapplication for Letters Patent filed June 7, 1905, Serial No.

264,130. The roll-surface so roughened structure rotatable ontrunproject commerciallymeasure at least, the end hereln incident to theuse of pitted rolls.

. the, machine will ers Will be welded through the makes such contactwith or gets such purchase on the molten lass that the .glass ma besuccessfully sprearlwith'out the liability to sli which is incident tothe use of smooth ro s. In Fig. 1 I have shown rolls 1 and 2 so pitted,and the sheet A, passing from between rolls 1 and 2, with the pimpled oruneven surface described in my application above referred to. The hum sor excrescenses are in consequence o the air entrappedbythe molten glassin the pits of the roll-surface unchilled. and soft, and the plate A,Fig. 1, may be passed between'finishing rolls 3 and 4 to produce a sheetof great smoothness. j

Instead of pitting the surfaces of.rolls 1 and 2 I rray pit the surfaceof either or botlto readily'be understood, I may pit the surfaces of allfour rolls.

these rolls. This iratter is, however, set forth in another applicationfor Letters Patent executed by me on even date herewith.

It will be understood that any roughening of In Fig. 2 the sheet A aftercompletion is delivered on the surface of a table 15, and, if

desired, this table may bear a surface-pattern into which the sheet maybe pressed by a roll 16.

Up to this point I have made no reference to the wire, and while it willbe observed that produce plates ofv glass whether wire be introduced ornot and that my invention is not necessarily limited in that regard thefact remains that the object is to introduce wire and producewire-glass. The wire (indicated in the drawings at-D') may, as shown inFig. 1, be introduced with the pass between the rolls 1 and 2, where theroll-surfaces faced with layers of glass approach one another, and insuch case the laymeshes of the wire, or, as shown in Fig. 2, the'wiremay be introduced beneath one of the rolls 5 and 6, and in such case oneof the com onent layers Wlll. advance to union with its fbllow havingthe wire embedded in itproximate surface. I preferably introduce thewire oen-trally,,as

In case rolls 5 and 601": either of them are pitted advantages followsuch as may dispense with the wetting of rolls 5 and 6-, as indicated inFig. 2, or, as will:

1 the surfaces of these rolls will effect, in some described as shown inFigs. 1 and 4. In that case it is heated by radiation from layers'B andC and accordingly expanded before it comes into contact'with the glass.

For present commercial purposes the wire D is in the form of netting;but obviously it may be in loose strands or may be made up in any otherdesired form. Furthermore, in place of wire any other suitable materialmay be introduced. While I employ the term fabric their scope anysubstance-suitable to be i1r= in the claims, I mean to include iri laidin glass regardless of material and regardless of minute formation andshape.

I preferably provide for heat insulation between both forming-rolls 5and 6 and the molten glass. It will be understood that my invention willbe practiced, though less elliciently, if but one of these rolls be soinsulated.

The operation of the parts will readily be understood. The several rollsbeing adjusted to desired position, molten glass is teemed in twobatches E and F into the two hopperlike receptacles formed by andbetween rolls 1 5 and 2 6. Rotation of the rolls then effects thespreading of layers B and C and the uniting ofthese layers into thesheet A. The

fabric D is simultaneously introduced in the manner already described toreduce wireglass, which is the desired pro not.

I claim as my invention- 1. In the operation of spreadin molten glass tolayer form, the herein-described method of producin a layer with soft orunchilled surface whic 1 consists in envelopin the surface of the formerwhich is em loye to s read the layer with a stratum 0 heatinsu atingsubstance in fluid form, substantially as described.

2. In the operation of s readin molten glass to layer form, thenerein-described method of producim a layer with soft or unchilledsurface which consists in wetting the surface of the former which isemployed to s u'ead the layer previous to the contact of t eformer withthe molten glass, substantially as described.

3. In a machine for making plate-glass, the combination of aforming-surface, a roll cooperating with said surface to spread moltenglass to layer form thereon, and means for applying to the surface ofsaid roll an envelop of heat-insulating substance, substantially asdescribed.

4. In a machine for making plate-glass, the combination of aforming-surface, a rotating roll whose surface cooperates durin a ortionof the rotation of'tlie roll with t e forming-surface to spread moltenglass to layer form thereon, a fiui .receptacle arran ed adjacent tosaid roll, portion of the walI of said fluid-receptacle ibeingprogressively formed-by a portion the surface of said roll when saidportion :s not cooperating with said forming-surface, substantially asdescribed.

5. In a machine for making plateglass, the combination of aforming-surface, a pair of rolls, each when in operative position 00-each of said pair of rolls assaid uid-receptacle swings coo erating withsaid formingsurface to spread molten lass to layer form thereon,substantially as described.

7. In a machine for making plate-glass the combination of aforming-surface, a roll cooperating with said surface to s read mol-.ten glass to layer form thereon, a uid-reee tacle arranged adjacent tosaid second r0 1,

and a wick extending from said receptacle and contacting with saidsecond roll, sub-' stantially as described. I 8. In a machine for makingwire-glass, the

combination of a pair of rolls rotating to unite.

upon a fabric fed into the pass 'between'them, layers of glass spreadupon their several sur faces, means for spreading molten glass to layerform upon the surfaces of said rolls, and

means for applying to the surface of said layer-forming means at thetime the layers are spread an envelop of heat-insulating substance,substantially as described.

9. In a machine for making wire-glass, the combination of a pair ofpitted rolls rotating to unite upon a fabric fed into the pass be tweenthem layers of glass spread upon their several surfaces, means forspreading molten glass to layer form u on the surfaces of said rolls,means for app ying. to the surface of said layer-forming means at thetime when} the layers are spread an envelop of heat-in air of finishinga j m hereuntose sulating substance, and a rolls, substantially asdescri ed.

In testimony whereof I have myhand.

NICKLAS FRANZEN."

Witnesses:

BAYARD H. CnRIsTY, CHARLES BARNETT.

